content: /*
   * Copyright 2017 David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package hu.akarnokd.reactive4javaflow.impl.operators;
  
  import hu.akarnokd.reactive4javaflow.*;
  
  import java.util.Arrays;
  import java.util.concurrent.Flow;
  
  public final class FolyamMergeArray<T> extends Folyam<T> {
  
      final Flow.Publisher<? extends T>[] sources;
  
      final boolean delayError;
  
      public FolyamMergeArray(Flow.Publisher<? extends T>[] sources, boolean delayError) {
          this.sources = sources;
          this.delayError = delayError;
      }
  
      @Override
      protected void subscribeActual(FolyamSubscriber<? super T> s) {
          Flow.Publisher<? extends T>[] srcs = this.sources;
          int n = srcs.length;
  
          FolyamSubscriber<? super Flow.Publisher<? extends T>> subscriber =
                  FolyamFlatMap.createSubscriber(s, v -> v, Integer.MAX_VALUE, FolyamPlugins.defaultBufferSize(), delayError);
          subscriber.onSubscribe(new FolyamArray.ArraySubscription<>(subscriber, srcs, 0, n));
      }
  
      public static <T> Folyam<T> mergeWith(Folyam<T> source, Flow.Publisher<? extends T> other, boolean delayError) {
          if (source instanceof FolyamMergeArray) {
              FolyamMergeArray aa = (FolyamMergeArray) source;
              if (aa.delayError == delayError) {
                  int n = aa.sources.length;
                  Flow.Publisher<? extends T>[] newSrcs = Arrays.copyOf(aa.sources, n + 1);
                  newSrcs[n] = other;
                  return new FolyamMergeArray<>(newSrcs, delayError);
              }
          }
          return new FolyamMergeArray<>(new Flow.Publisher[] { source, other }, delayError);
  
      }
  }
  